Carriage Rod; Carriage Assembly And Drive Belt - Samsung SF-330 Series Service Manual

SF-330 Series Graphic Print Bar
Service Guide
4. Place the keyhole opening of the carriage rod lock over the carriage rod, making sure that the smooth side of
the rod lock is toward the carriage bar.
5. Slide the rod lock up to seat the lower part of the keyhole opening onto the carriage rod.
6. Use needle -nose pliers to rotate the lock clockwise (about 90º) until it secures against the protruding edge in
the carriage bar (see Figure 3-10 위).

3.8 Carriage Rod

Replacement Note: If the Carriage Rod requires replacement due to excessive wear or damage,
it is recommended that the entire print mechanism be replaced since a badly worn (or damaged)
carriage rod would indicate a severely used (or damaged) print mechanism!
Preparation
Remove the carriage rod lock and encoder strip spring as detailed in section 3.5.
Removal
Slip the carriage rod free from the carriage bar and slide it to the right and out of the carriage assembly.
Replacement
1. Insert the smooth end of the carriage rod through the right side of the carriage assembly and into the hole in the
left side of the carriage bar.
2. Seat the grooved end of the rod into the right side of the carriage bar.
3. Replace the encoder strip spring, the rod lock, and reattach the encoder strip as described in section 3.5.
Important Carriage Rod Lubrication Note:
When the Print Mechanism is originally manufactured, the carriage rod is lubricated with two drops of
synthetic, low vapor-pressure oil which is compatible with the plastic carriage and resistant to evaporation.
This lubrication starts the capillary action of the two oiled sintered bearings located in the carriage.
If the carriage rod is replaced, lubricate ONLY with a similar light synthetic, low vapor-pressure oil. If
light synthetic oil is unavailable, it is recommended that the entire print mechanism be replaced since
using normal petroleum based oil on the carriage rod will attract excessive paper dust and lead to increased
friction in the servo system and possible carriage stalls.
When oiling the carriage rod, apply two drops of oil:
1. One drop between the carriage bearings.
2. One drop in the center of the carriage rod.

3.9 Carriage Assembly and Drive Belt

Removal and Replacement
1. Disconnect the flex cable from the PBA (on the printer) that it is attached to.
Samsung Electronics Confidential
© Copyright Samsung Electronics Company 2002
Page 19
SF-330 Series Graphic Print Bar Service Guide
Revision 1.0; 23-Jul-02